Brian wanted to use a few metal objects in his building project. He was going through a few of the drawings of objects to understand their respective space and dimensions. He realized that he will require a secondary auxiliary view to gain better understanding. Which drawing is necessary for him to create a secondary auxiliary view from? A.
front view
B.
top view
C.
primary auxiliary view
D.
tertiary auxiliary view

C. Primary auxiliary view

Explanation:

A secondary auxiliary view is obtained by projecting the primary auxiliary view  to the plane which lies perpendicular to the true (complete) edge length of the primary auxiliary view. In the secondary auxiliary view, the sides that come after the closer edges of the primary auxiliary view becomes visible making it appear that the side after the closer edge is the visible top of the view

Therefore, the drawing necessary for him to create the secondary auxiliary view is the primary auxiliary view.

can you make it more obvious. i can't see it properly